Home / 28,215.65-42,319.16-7,440.77

Finding the Fourth Proportional to 28,215.65, 42,319.16 and 7,440.77

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Solution

The fourth proportional to 28,215.65, 42,319.16 and 7,440.77 is: 11,160.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,215.65 : 42,319.16 = 7,440.77 : x
  2. Step 2: Convert to fraction form
    28,215.65/42,319.16 = 7,440.77/x
  3. Step 3: Cross multiply
    28,215.65x = 42,319.16 × 7,440.77
  4. Step 4: Simplify right side
    28,215.65x = 314,887,232.65
  5. Step 5: Solve for x
    x = 314,887,232.65/28,215.65
  6. Step 6: Final answer
    x = 11,160.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.